in mouse, black fur (B) is dominant to brown fur (b), and short tail (T) is dominant to long tail (t). The two genes are on different chromosomes. If a black and short-tailed mouse is crossed with a brown and long-tailed mouse, what fraction of the progeny will be black and short tailed?(A)100%(B)50%(C)75%(D)25%(E) It depends on the first mouse genotype